Applying the spinor representation of the electromagnetic field, this paper present a quantum-mechanical description of waveguides. As an example of application, a potential qubit generated by photon tunnelling is dis...Applying the spinor representation of the electromagnetic field, this paper present a quantum-mechanical description of waveguides. As an example of application, a potential qubit generated by photon tunnelling is discussed.展开更多
Two-dimensional （2D） slab photonic crystal waveguides （PCWGs） on silicon-on-insulator （SOI） wafer were designed and fabricated. Full photonic band gap, band gap guided mode, and index guided mode were observed b...Two-dimensional （2D） slab photonic crystal waveguides （PCWGs） on silicon-on-insulator （SOI） wafer were designed and fabricated. Full photonic band gap, band gap guided mode, and index guided mode were observed by measuring the transmission spectra. Mini-stop-bands in the PCWG were simulated with different structure parameters. Coupling characteristics of PCWG were investigated theoretically considering the imperfections during the fabrication process. It was found that suppressing power reservation effect can realize both short coupling length and high coupling efficiency.展开更多
We propose and analyze a long-range dielectric-loaded surface plasmon polariton （SPP） waveguide based on graded-index ridge over server millimeter distances. Then the influence of the dielectric thickness and the ri...We propose and analyze a long-range dielectric-loaded surface plasmon polariton （SPP） waveguide based on graded-index ridge over server millimeter distances. Then the influence of the dielectric thickness and the ridge refractive index on propagation length and mode width is discussed and simulated with the finite ele- ment raethod. The result shows that the SPP can propagate as long as 3.42 mm, as well as the mode width keeping as 1.64μm, a better one compared with the fixed refractive index. Considering its nanoscale dimension and outstanding performance, the structure is easily realized when connected with electrodes.展开更多
基金Project supported by the National Natural Science Foundation of China (Grant No 60671030)the Scientific Research Foundation for the Introduced Talents, UESTC (Grant No Y02002010501022)
文摘Applying the spinor representation of the electromagnetic field, this paper present a quantum-mechanical description of waveguides. As an example of application, a potential qubit generated by photon tunnelling is discussed.
基金the National Natural Science Foundation of China(NSFC-60537010)the National"973"Program of China(No.2007CB307004 and 2006CB302804)
文摘Two-dimensional （2D） slab photonic crystal waveguides （PCWGs） on silicon-on-insulator （SOI） wafer were designed and fabricated. Full photonic band gap, band gap guided mode, and index guided mode were observed by measuring the transmission spectra. Mini-stop-bands in the PCWG were simulated with different structure parameters. Coupling characteristics of PCWG were investigated theoretically considering the imperfections during the fabrication process. It was found that suppressing power reservation effect can realize both short coupling length and high coupling efficiency.
基金supported by the National Natural Science Foundation of China(Nos.61275201 and 61372037)the Beijing Excellent Ph.D.Thesis Guidance Foundation(No.20131001301)+1 种基金the Fund of State Key Laboratory of Information Photonics and Optical Communications(Beijing University of Posts and Telecommunications)the Opened Fund of the State Key Laboratory on Integrated Optoelectronics,Institute of Semiconductors,Chinese Academy of Sciences
文摘We propose and analyze a long-range dielectric-loaded surface plasmon polariton （SPP） waveguide based on graded-index ridge over server millimeter distances. Then the influence of the dielectric thickness and the ridge refractive index on propagation length and mode width is discussed and simulated with the finite ele- ment raethod. The result shows that the SPP can propagate as long as 3.42 mm, as well as the mode width keeping as 1.64μm, a better one compared with the fixed refractive index. Considering its nanoscale dimension and outstanding performance, the structure is easily realized when connected with electrodes.
